3,339 Answered Questions for the topic Science

I need help with my chemistry assignment

Hi. I do sit-ins at my mum's university because she wanted me to excel in chemistry but I'm only in 8th grade and the lectures my professor gives are in advanced levels. I'm forced to take exams... more
Science

10/12/15

What is this condition? How could the patient have gotten hyponatremia? What is happening at the cellular level?

A patient is brought into an ER presenting with symptoms that mimic intoxication. The patient’s friend says they have not been drinking but are gearing up for a marathon the following weekend.... more
Science Ela Reading

10/07/15

Which detail supports the main idea that microgravity weakens astronauts' bones?

Which detail supports the main idea that microgravity weakens astronauts' bones? A) astronauts grow 1-3 inches taller B) Astronauts' legs become thins and sticklike C) astronauts lose 10 percent of... more

09/30/15

Half life problem

If 17% of a radioactive substance decays in 5 hours, what is the half-life of the substance?
Science

09/27/15

Two people, one with mass 58 kg, and the other with mass 94 kg, are standing 1.3 meters apart. What is the gravitational attraction force between them?

i suck at science and need major help in order to pass this course
Science Paleontology

09/27/15

Science: Fossil

why is it hard for an organism to become a fossil?
Science

09/24/15

Give 3 examples of how radioactive isotopes are used in science to study earth and life?

What are three examples of how radioactive isotopes are used to study earth and life?
Science

09/19/15

How far away is the horizon?

How far away is the horizon? Or, how far out can you see on a clear day with no obstructions, assuming you have 20/20 vision.

Quick Science Question: °K or K?

So... I know that it's always °C for Celsius and °F for Fahrenheit, but I have a question about Kelvin.   Let's say you have 0°C, which is 32°F, which is also 273°K... or is it just 273 K? My... more
Science

09/13/15

why is critical thinking important in science

I need help with my science homework can someone help me
Science Earth Science

09/10/15

What caused the city of Venice to sink

What caused the city of venice to sink?
Science Physics Vector

09/07/15

Vector displacement problem (Physics)

Consider two vectors F~1 with magnitude 81 Ninclined at 281?and F~2 with magnitude 52 Ninclined at 228?, measured from the positivex axis with counterclockwise positive.What is the magnitude of the... more

09/05/15

help me with my project???

Use the metric balance to determine the mass of the coins. It is easiest to do this by measuring the mass of more than one coin because you can divide by that number to get the actual mass of 1... more

09/05/15

Help me with my project?????

Make a hypothesis in which you suggest which coin will have the highest density and which will have the lowest density. A model hypothesis might be: "If the (fill in the name of a coin) has a... more
Science

09/04/15

Match the atomic particles with their characteristics.

1. made of two protons and two neutrons                      neutron 2. similar to an electron; positive charge                       meson 3. orbits nucleus; negative charge                    ... more
Science

09/03/15

Why are scientists most likely working on developing cleaner-burning fuel for cars?

i dont kkoon

Two Forces are acting on an object, a 12-N force and a 5-N force. What is the minimum net force can act on the object?

Two Forces are acting on an object, a 12-N force and a 5-N force. What is the minimum net force can act on the object? Decribe the orientation of the forces in order to give a minimum net force.... more
Science

08/26/15

Water is a good conductor of electricity.Then why electrical appliances get damaged if it is wet?

Water is a good conductor of electricity.Then why electrical appliances get damaged if it is wet?
Science

08/24/15

list two items in the compost that contain carbon

i need help for science homework

07/22/15

Physics: What are the following for this system: amplitude, frequency, period, spring constant, max velocity and total energy?

A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: (1.5 )sin (21.4 t ) [here the units are standard, meters and seconds]   What are the following for this... more
Science Biology Genetics

07/22/15

Genetics help

In the case of dalmation dogs, the non-spotted condition is recessive to the dominant spotted condition. Call the 2 alleles S for spotted and s for non-spotted. Both parents are heterozygous.   A)... more

07/18/15

Physics: Multiple Choice:

Because of friction pendulum clocks need a small driving force, if accidentally it was too large of a driving force and caused a bit too large of an angle of oscillation to be formed what would... more

07/18/15

Physics: Multiple Choice: what happens to the wavelengths of the siren as measured by the observer while the police car approaches to when he goes away?

A police car is driving past an observer sitting by the side of the road, what happens to the wavelengths of the siren as measured by the observer while the police car approaches to when he goes... more

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